Synology DS425+ NAS Review – SHOULD YOU BUY?

 Synology DS425+ Review – Should You Buy This NAS?

The Synology DS425+ is a 4-bay NAS system launched in mid-2025 as part of the company’s continued refresh of its Plus Series product line, replacing the DS423+. It is designed to serve home power users, creative professionals, and small business environments that require a balance of reliable storage, streamlined software integration, and modest multimedia capabilities. The unit retains a familiar chassis and architecture, featuring the Intel Celeron J4125 quad-core processor (2.0 GHz base, 2.7 GHz burst) with integrated graphics support, 2GB of soldered DDR4 memory (expandable up to 6GB with an additional 4GB Synology module), and two M.2 NVMe slots intended primarily for SSD caching using Synology-verified drives.

Alongside this hardware, the DS425+ runs DSM 7.2 and includes the full suite of Synology services, such as Active Backup, Surveillance Station, Virtual Machine Manager, Synology Drive, and Hybrid RAID (SHR) support. Network connectivity is handled by a single 2.5GbE and a 1GbE port, while two USB 3.2 Gen 1 ports enable external storage or UPS integration. Despite minimal hardware changes over its predecessor, the DS425+ demonstrates Synology’s continued focus on efficiency, low noise output, and energy-conscious operation—important factors for users planning to run a 24/7 NAS. However, these choices also reflect broader changes in Synology’s platform strategy that may not suit every user, especially those seeking higher flexibility or modern internal specifications.

SOFTWARE - 10/10
HARDWARE - 4/10
PERFORMANCE - 6/10
PRICE - 6/10
VALUE - 7/10


6.6
PROS
👍🏻DSM 7.2 Operating System: Offers a rich suite of first-party apps including Active Backup, Surveillance Station, Synology Drive, and Hyper Backup with strong cross-platform support.
👍🏻Low Noise and Power Consumption: Quiet 92mm fan setup and efficient power usage (~28W under load) make it ideal for 24/7 operation in home or office environments.
👍🏻Integrated Graphics (Intel UHD 600): Supports light Plex or Jellyfin hardware transcoding for 1080p media, a rare inclusion in Synology’s 2025 lineup.
👍🏻Compact and Versatile Design: Small chassis with 4 SATA bays and 2 M.2 NVMe slots for cache acceleration, supporting RAID 5/6 and SHR.
👍🏻Strong Security Posture: Includes 2FA, SSL, VPN tools, and a proactive PSIRT vulnerability disclosure program for ongoing protection.
👍🏻Good Thermal Management: Maintains stable drive and system temperatures (~32–35°C) even under moderate load.
👍🏻Broad Software Ecosystem: Additional apps like Synology Photos, Chat, Office, and Drive make it a multi-functional NAS beyond just storage.
CONS
👎🏻Strict Drive Compatibility: Requires Synology-only HDDs and SSDs for full functionality; third-party drives trigger warnings or are blocked entirely.
👎🏻Outdated CPU Platform: Uses a 2019-era Intel J4125 CPU, now underpowered compared to newer Intel N-series or AMD embedded chips.
👎🏻Memory Upgrade Limitations: Comes with 2GB soldered RAM, upgradeable to only 6GB total, and officially supports Synology-branded memory only.
👎🏻Limited Connectivity and I/O: No PCIe, eSATA, or SD card support; only one 2.5GbE and two 5Gbps USB ports—lagging behind competitors in 2025.



Synology DS425+ NAS

Amazon in Your Region for the Synology DS425+ NAS @ $519

B&H for the Synology DS425+ NAS @ $519.99

DSM Software Ecosystem and Integration

One of the most compelling reasons to consider the DS425+ is its support for Synology’s DiskStation Manager (DSM), a mature and highly integrated NAS operating system. DSM 7.2, which comes preinstalled, offers a unified and consistent user experience with a wide range of built-in applications tailored for home users, remote workers, and small office setups. Core tools like Active Backup for Business allow centralized backup of entire operating systems, folders, and virtual machines, making the DS425+ useful as a bare-metal recovery or disaster recovery node. Hyper Backup enables encrypted, versioned backups to local, remote, or cloud destinations, while tools like Snapshot Replication provide rapid rollbacks and protection against ransomware.

Synology also offers sector-specific solutions through packages like Surveillance Station and Virtual Machine Manager, the former allowing support for up to 40 cameras (with up to 800FPS at 1080p H.264), and the latter providing basic VM hosting for Linux and lightweight Windows workloads. These tools are tightly optimized for the hardware, with low overhead and accessible browser-based management. Furthermore, the DS425+ supports Synology Hybrid RAID (SHR), giving users more flexibility when mixing drive capacities and minimizing unused storage space compared to traditional RAID models.

DSM extends beyond simple storage management by including companion apps like Synology Photos, Drive, and Chat, all of which are compatible with Windows, macOS, Android, and iOS. The DS425+ integrates these tools with centralized user management, group permissions, and support for LDAP and Active Directory.

For users who value reliability, Synology’s proactive security strategy—including its public security advisories, pen-testing initiatives, and in-house incident response—adds extra confidence to the long-term stability and safety of the system. In many cases, users report that the simplicity and polish of DSM is what keeps them loyal to the Synology platform, even when hardware specifications appear modest.

Strict Drive Compatibility and Locked Storage Expansion

One of the most significant limitations of the DS425+ is its strict enforcement of Synology-only drive compatibility, particularly for both 3.5″ HDDs and M.2 NVMe SSDs. As of mid-2025, this model only allows full functionality when paired with Synology-branded drives, such as the HAT5300 series for hard disks or SNV3410/3510 for SSDs.

If users attempt to install non-Synology drives—even widely used options like Seagate IronWolf or WD Red—the system will either block the drives entirely or present warnings and restrict key functionality, such as RAID rebuild, hot spare assignment, or expansion. This policy represents a significant departure from Synology’s historically broader compatibility stance and has become a source of ongoing controversy among users and reviewers alike.

From a practical standpoint, this limitation can result in higher upfront costs, reduced flexibility in sourcing drives, and long-term concerns about availability and vendor lock-in. For example, Synology’s high-capacity enterprise HDDs are often difficult to find in retail channels and may be priced at a premium compared to similar offerings from Seagate or Toshiba.

Users migrating from older Synology systems who want to reuse perfectly functional drives may find themselves unable to do so, as the new system won’t allow proper array recovery or expansion unless all drives meet the strict compatibility criteria. While this approach enables Synology to tightly optimize performance and reliability, it effectively turns the DS425+ into a semi-proprietary ecosystem where even core storage components are vendor-restricted.

This is particularly frustrating for experienced NAS users who expect to mix and match drives or who run environments where hardware recycling and drive lifecycle management are critical. The decision also impacts future-proofing: users who want to grow their arrays over time must now ensure drive stock alignment with Synology’s approved list, which may change over time or vary by region. Despite DSM’s strengths, this hard stance on compatibility significantly undermines one of the key selling points of NAS platforms—modularity—and could be a dealbreaker for value-conscious users or those with existing disk investments.

Low Noise and Power Efficiency for 24/7 Use

Another advantage of the DS425+ lies in its energy-efficient and acoustically quiet design, which makes it highly suitable for constant operation in homes, studios, or office environments where noise and heat are critical considerations. Based on extended testing, the system consumes just 28.25W under access load and drops to as low as 6.10W in HDD hibernation, making it one of the more economical NAS units in its class when measured over long-term 24/7 usage.

Even when populated with four 4TB hard drives and placed under sustained load, real-world power draw rarely exceeded 44W during high CPU utilization. This is further aided by the relatively low thermal output, with ambient casing temperatures measured around 32°C and drive bays stabilizing at just 35°C under load.

In terms of acoustic performance, the DS425+ is equipped with two 92mm fans, and noise testing shows the system remains quiet enough for close-proximity deployment. In idle mode with the fans on their lowest profile, it registers a sound level between 36 to 38 dB(A), which increases only moderately under load or at medium fan speed. Even when the system was manually set to full fan speed with high drive activity, noise output peaked at 53 dB(A)—still manageable for most non-silent workspaces. This operational profile makes the DS425+ appealing to users seeking a low-maintenance NAS that can be discreetly placed in a shared room, office, or AV rack without introducing unwanted distraction or thermal buildup.

This power and noise behavior also helps prolong component lifespan, particularly in warmer climates or enclosed cabinets, and supports use cases like 24/7 media server operation, offsite backups, or even small-scale CCTV archiving. Importantly, despite these low operating figures, the DS425+ still maintains stability and consistent throughput thanks to the efficiency of the J4125 processor and DSM’s power-aware service management. These characteristics, often underappreciated in specs alone, make it especially suitable for those who want reliable long-term uptime without high energy costs or acoustic interference.

Memory Limitations and Unorthodox Upgrade Path

The DS425+ comes with 2GB of DDR4 memory soldered directly to the motherboard, which is low by 2025 standards even for entry-level NAS devices. While it includes an additional memory slot that allows for the installation of a single 4GB module, the system officially supports a maximum of just 6GB of total RAM. This is an unusual and restrictive configuration, especially when many modern NAS devices now ship with 4GB or 8GB by default, and support 16GB or more—sometimes with dual-channel configurations for better performance. Synology’s strict validation policy also means that only their branded RAM (e.g. D4NESO-2666-4G) is fully supported, and installing third-party modules can trigger warnings in DSM or potentially void support coverage.

This memory ceiling becomes problematic when running DSM features that scale with RAM usage, such as Synology Drive, Snapshot Replication, Virtual Machine Manager, or Surveillance Station. As observed during testing, the DS425+ routinely used 27–38% of its available memory at idle, even without third-party packages installed. This is largely due to DSM’s intelligent memory caching system, which improves performance but leaves little headroom for user-defined workloads. Once additional services or multimedia indexing tasks are introduced, memory utilization climbs quickly, increasing the risk of slowdowns, swap usage, or outright service failure under peak demand.

For users who intend to deploy containers, host multiple camera feeds, or run even a small number of VMs, this limitation may lead to bottlenecks sooner than expected. It also makes the DS425+ a less viable choice for future expansion or multi-user environments. Unlike other NAS brands that allow full third-party upgrade freedom—or systems with dual RAM slots and broader capacity support—Synology’s enforced limitations here represent another example of the platform’s increasingly locked-down approach. For a system marketed to prosumers, the inability to exceed 6GB RAM comfortably is a notable technical and strategic constraint.

Integrated Graphics for Light Media Transcoding

Unlike many NAS units in this price tier, the DS425+ includes an Intel Celeron J4125 processor with integrated Intel UHD Graphics 600, which unlocks hardware-accelerated video decoding and transcoding in supported applications like Plex or Jellyfin. This makes the DS425+ one of the few Synology models in 2025 that still offers integrated GPU support out of the box, especially as newer Synology models with more recent CPUs have increasingly omitted integrated graphics. While the DS425+ is not intended to replace a dedicated media server, its GPU can significantly improve performance and efficiency for on-the-fly transcoding of formats like H.264 and H.265 (HEVC), particularly when streaming to remote clients with bandwidth constraints.

In real-world usage scenarios, this means the DS425+ can handle direct streaming and limited transcoding of 1080p content without overwhelming the CPU, provided the source formats are within the GPU’s supported codec list. During Plex testing, the DS425+ performed adequately with one or two 1080p transcodes running simultaneously, and was also able to manage basic 4K downscaling if the codec was natively supported by the hardware. For home users who have mixed devices—such as smart TVs, mobile devices, and tablets that vary in codec support—the presence of hardware transcoding offers improved flexibility without requiring as much manual conversion or format standardization of their media library.

Additionally, Synology’s native multimedia applications such as Surveillance Station and Synology Photos also benefit from GPU acceleration, helping speed up thumbnail generation, indexing, and playback, especially for high-resolution image and video collections. While raw CPU power in the DS425+ is modest by 2025 standards, the inclusion of integrated graphics helps balance out performance for lightweight graphical workloads and makes the system more viable as a general-purpose media hub. For users considering a NAS for Plex, family media streaming, or small business content previews, this capability adds meaningful value—especially since few modern Synology NAS devices still include Intel-based chips with iGPU support.

Outdated CPU Platform and Limited Performance Headroom

The DS425+ ships with the Intel Celeron J4125, a 4-core, 4-thread processor that was originally launched in late 2019. While it offers modest performance and includes integrated graphics, the J4125 is now significantly behind modern alternatives in both efficiency and raw compute power. Intel itself has discontinued the Celeron branding entirely, moving toward newer architectures like Alder Lake-N and Jasper Lake, which offer improved IPC (instructions per cycle), higher core/thread counts, and better thermal efficiency—all while retaining low power consumption. In comparison, the J4125’s aging 14nm Gemini Lake architecture struggles with heavier multitasking, especially when running services like virtual machines, surveillance workloads, or multiple Docker containers in parallel.

Synology has retained this CPU across several generations of its 2- and 4-bay Plus series models, which makes the DS425+ feel less like a generational upgrade and more like a lateral move. During performance testing, the unit handled DSM core tasks and multimedia indexing smoothly, but CPU load increased sharply under heavier tasks such as simultaneous Surveillance Station streams, Hyper Backup routines, or basic VM instances.

Synology DS224+ NAS Memory

This limited headroom constrains the DS425+ to light-to-moderate workloads, and it can bottleneck more quickly than newer systems from other brands using more recent Intel N-series or AMD Ryzen Embedded CPUs. This is especially important as DSM continues to add new features that may increase background resource consumption over time.

Additionally, the CPU’s lack of support for modern instruction sets or features like AVX can limit compatibility with certain Docker containers or third-party applications that expect more recent hardware. While the DS425+ can serve well as a general-purpose file server or light media NAS, it’s not suited for users who anticipate growth into heavier mixed-use deployments. In a 2025 market where many similarly priced NAS units offer 6- or 8-core CPUs and PCIe Gen 3 or 4 support, the DS425+ feels constrained and unlikely to age well for users with evolving or expanding workloads.

Compact Form Factor with Versatile Storage Options

The DS425+ offers a space-efficient chassis design that houses four 3.5″/2.5″ SATA drive bays, along with two M.2 2280 NVMe SSD slots for caching. This provides a versatile platform for users who want flexible storage layouts without moving to a physically larger or more expensive rackmount or tower system.

The vertical orientation of the chassis, measuring just 166 x 199 x 223 mm, makes it easy to deploy the device in tight workspaces, shelving units, or beneath desks—ideal for small offices, home studios, or AV setups where space is at a premium. Despite its small footprint, the device retains full support for key RAID configurations including SHR, RAID 5/6/10, and JBOD, and offers hot-swappable access to the main drive bays for ease of maintenance.

The inclusion of two M.2 NVMe slots on the base of the unit allows users to improve performance through read/write caching without sacrificing primary drive bays. Although these M.2 slots are limited to Synology-verified SSDs and are not usable for storage pools, they can still offer significant boosts to random I/O performance in multi-user environments or when used with demanding workloads like Synology Drive or VM hosting. Combined with support for SSD TRIM and smart cache algorithms within DSM, the system can be tuned to optimize response times during high-access periods without introducing large amounts of memory overhead.

From a practical standpoint, this layout is beneficial for users managing multiple storage tiers, such as a mix of large-capacity HDDs for archiving and faster SSDs for active projects or virtual machines. Furthermore, the DS425+ supports volume expansion using larger capacity drives, RAID migration options (e.g. from Basic to RAID 5 or RAID 5 to RAID 6), and up to 32 internal volumes, giving users enough headroom for future scaling. These features, while standard in DSM, are fully supported in this chassis and make it easier to adapt the NAS as storage needs evolve—without the need to start from scratch or invest in a new enclosure.

Limited I/O and Underwhelming Connectivity for the Price

While the DS425+ introduces a 2.5GbE network port alongside a legacy 1GbE port, the rest of its I/O configuration is relatively limited and arguably outdated compared to competitors in its price range. The system includes just two USB 3.2 Gen 1 ports, both of which operate at 5Gbps rather than the more modern 10Gbps (Gen 2) speeds that are increasingly common in 2025. There is no SD card slot, no eSATA or PCIe expansion slot, and no HDMI output, all of which are features now appearing on rival NAS systems from QNAP, TerraMaster, and UGREEN—even at similar or lower price points. These omissions restrict how the device can be expanded or integrated into more complex workflows, such as direct-attached backup targets, external GPU support, or quick media ingestion.

The presence of only a single 2.5GbE port also imposes a bottleneck for users wanting to make full use of SSD caching or high-throughput RAID configurations. There is no support for link aggregation, as the 1GbE and 2.5GbE ports cannot be bonded in a meaningful way, and the system lacks support for 5GbE or 10GbE—either onboard or via expansion. In scenarios where large video files, virtual machine images, or multiple users are simultaneously accessing data, the NAS may become network-bound more quickly than other models with multi-GbE or SFP+ connectivity.

Furthermore, while DSM offers support for USB peripherals such as external drives and UPS devices, the limited port count and bandwidth mean there is little headroom for simultaneous external expansions, and the brand limits the support of USB peripherals for security reasons. For example, attaching both an external drive and a USB-connected UPS may require unplugging one to rotate in another device. This may not impact casual home users, but for power users managing workflows like video editing, offsite rotation backups, or multi-location file sync, this level of I/O flexibility feels dated. When factoring in the DS425+’s pricing, which places it near many NAS models with more expansive I/O, this minimalism can be a significant drawback.

Strong Security Framework and Proactive Vulnerability Management

The DS425+ benefits from Synology’s broader emphasis on security, offering a robust framework for data protection, secure remote access, and proactive threat mitigation. DSM includes built-in tools such as firewall rules, auto-blocking of suspicious IPs, HTTPS configuration, and native integration with Let’s Encrypt for SSL certificates. Two-factor authentication (2FA) can be enforced per user or globally, and built-in VPN server options (including OpenVPN and L2TP/IPSec) provide secure tunnels for remote workers or offsite access. For businesses or power users hosting sensitive data, the inclusion of AES-NI hardware encryption ensures efficient at-rest protection without drastically impacting system performance.

What sets Synology apart is its ongoing commitment to security research and response. The company operates a public-facing Product Security Incident Response Team (PSIRT) and regularly updates a detailed security advisory page disclosing vulnerabilities and their mitigations. Synology also participates in Pwn2Own, a white-hat hacking competition, and runs internal bug bounty programs to uncover and patch exploits before they are discovered in the wild. This culture of transparency and preemptive action is especially valuable as NAS devices become more frequently targeted by malware and ransomware threats, particularly those exposed to the internet or used in hybrid cloud workflows.

Additionally, many DSM apps include granular permission management, audit logs, and user-based access rules, giving administrators tight control over file shares, backup targets, and service access. Synology’s Hybrid Share and Cloud Sync tools support end-to-end encryption and offer options to decouple cloud storage keys from the local system, further strengthening data sovereignty. For users concerned with long-term viability and platform trust, Synology’s structured and well-documented security practices help the DS425+ stand out against competitors that may offer more hardware but less attention to software and infrastructure hardening. This makes it a viable choice for users prioritizing data safety in either personal or professional contexts.

Questionable Long-Term Value Amid Shifting Synology Strategy

Another concern with the DS425+ is its position within Synology’s evolving product strategy, which raises questions about long-term support and ecosystem focus. Synology has recently been expanding its BeeStation and BeeStation Plus lines—pre-populated, user-friendly NAS solutions that share similar hardware (in some cases, the same J4125 CPU), but are bundled with drives and offer a simplified DSM variant tailored for general consumers. These systems, while more limited in scope, are marketed as turnkey alternatives with lower pricing and fewer user-configurable components. The DS425+, by contrast, sits awkwardly between Synology’s increasingly restrictive hardware requirements and the emerging shift toward closed, fully managed platforms.

This change in trajectory creates uncertainty for prospective buyers looking for a long-term investment. If Synology continues prioritizing its proprietary hardware and software pairings, users who prefer modularity, drive freedom, or advanced customization may find themselves increasingly constrained. As already noted, the DS425+ enforces tight compatibility rules, limits memory expansion, and restricts NVMe usage to caching only. At the same time, Synology is streamlining its portfolio around devices with even stricter limitations but more mass-market appeal. This raises the possibility that traditional “Plus” models like the DS425+ may be sidelined or see fewer feature updates in future DSM releases, as Synology shifts development toward more controlled environments.

From a cost perspective, the DS425+ is priced around $519, placing it uncomfortably close to more powerful third-party NAS systems that offer better CPUs, more RAM, and greater I/O flexibility. Competing brands frequently offer 4-bay systems with modern N-series Intel processors or embedded AMD chips, 8GB+ of memory, and faster networking, often for the same or lower price. As a result, the DS425+ risks being outclassed not only by its competition, but by Synology’s own growing lineup of prepackaged solutions. Users investing in the DS425+ today may find themselves limited not just by current specs, but by an ecosystem slowly drifting away from the prosumer and enthusiast segment this model was originally meant to serve.

Synology DS425+ NAS Review – Conclusion and Verdict

The Synology DS425+ presents a mixed proposition in 2025. On one hand, it remains a competent 4-bay NAS solution for users prioritizing software integration, low power operation, and quiet, reliable 24/7 usage. Its support for DSM 7.2 and the full suite of Synology applications—ranging from Active Backup to Surveillance Station and Synology Drive—makes it a strong turnkey platform for general-purpose storage, backup, and multimedia needs. Integrated graphics give it an edge in light media streaming scenarios, and its support for M.2 NVMe caching allows for performance optimization without occupying drive bays. It’s a well-built device that continues to “just work,” particularly in home and small office setups where reliability, simplicity, and refined software matter more than raw horsepower.

However, these strengths are increasingly offset by hardware limitations and Synology’s increasingly restrictive ecosystem. The soldered 2GB of RAM, locked 6GB memory ceiling, outdated CPU, limited I/O, and especially the enforced use of Synology-only drives all hinder flexibility and long-term value. When compared to similarly priced alternatives from competing NAS vendors—many of which offer newer processors, faster ports, and full hardware freedom—the DS425+ can feel constrained and overpriced. In addition, Synology’s expanding focus on pre-populated BeeStation devices suggests a possible shift away from traditional DIY-friendly models like this one. For users who are already invested in the Synology ecosystem or who value DSM above all else, the DS425+ may still be a worthwhile buy. But for those seeking hardware scalability, third-party compatibility, or better price-to-performance, it may be worth considering other options or waiting to see how Synology’s roadmap evolves.

Synology DS425+ NAS

Amazon in Your Region for the Synology DS425+ NAS @ $519

B&H for the Synology DS425+ NAS @ $519.99

Synology DS425+ NAS Pros Synology DS425+ NAS Cons
  • DSM 7.2 Operating System: Offers a rich suite of first-party apps including Active Backup, Surveillance Station, Synology Drive, and Hyper Backup with strong cross-platform support.

  • Low Noise and Power Consumption: Quiet 92mm fan setup and efficient power usage (~28W under load) make it ideal for 24/7 operation in home or office environments.

  • Integrated Graphics (Intel UHD 600): Supports light Plex or Jellyfin hardware transcoding for 1080p media, a rare inclusion in Synology’s 2025 lineup.

  • Compact and Versatile Design: Small chassis with 4 SATA bays and 2 M.2 NVMe slots for cache acceleration, supporting RAID 5/6 and SHR.

  • Strong Security Posture: Includes 2FA, SSL, VPN tools, and a proactive PSIRT vulnerability disclosure program for ongoing protection.

  • Good Thermal Management: Maintains stable drive and system temperatures (~32–35°C) even under moderate load.

  • Broad Software Ecosystem: Additional apps like Synology Photos, Chat, Office, and Drive make it a multi-functional NAS beyond just storage.

  • Strict Drive Compatibility: Requires Synology-only HDDs and SSDs for full functionality; third-party drives trigger warnings or are blocked entirely.

  • Outdated CPU Platform: Uses a 2019-era Intel J4125 CPU, now underpowered compared to newer Intel N-series or AMD embedded chips.

  • Memory Upgrade Limitations: Comes with 2GB soldered RAM, upgradeable to only 6GB total, and officially supports Synology-branded memory only.

  • Limited Connectivity and I/O: No PCIe, eSATA, or SD card support; only one 2.5GbE and two 5Gbps USB ports—lagging behind competitors in 2025.

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      127 thoughts on “Synology DS425+ NAS Review – SHOULD YOU BUY?

      1. Uh oh don’t let Synology see this otherwise they’ll make it so you can’t benchmark third party drives! Like how you can’t see detailed SMART info for third party drives ????

        I think Synology’s idea with the drive restrictions is so that they can better support problems since the drives run their own firmware and are supposedly better optimised to work with the enclosure/filesystem/SHR etc. Would be curious to know if that’s actually the case though. I did see someone on Reddit saying Synology drives throw fewer errors in their enterprise systems.
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      2. We are being forced to choose synology branded drives. I don’t want this and will see how this all plays out before I upgrade my system. I certainly don’t want to have to get rid of all of my 16TB drives just to buy Synology branded ones.
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      3. My issue is their HAT5300 line is substantially more expensive the the equivalent Toshiba MG09 that it is rebranded from. Their HAT3310 are close enough to their original, but I won’t buy a Seagate ever again since they decided profit was more important than following US Sanctions, regardless of their excuse. I don’t care if you buy them, but lack of patriotism in a US company is something I can’t abide.

        Still watching what is going on. I won’t make a decision until it is time to buy that next NAS. You would think they would fast track the companies that make their rebranded drives, at least on their + series, which is more prosumer/small business than professional. I’ve been happy with my Toshiba drives. I’d buy more.
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      4. Slimey move from Synology I’ve been running their DS + RS gear for nearly 10 yrs… This does make me wonder if you could read firmware from a “synology” drive and just flash that onto an identical Seagate drive controller with it being the same internals and most likely same PCB.
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      5. *We’ve only ever used “cheap” disks for well over a decade, and we’ve NEVER had any problems with them.*
        *Therefore, there is NO real, objective reason to buy massively overpriced Synology HW and SW.*
        _(And yes, the Synology SW will also become massively more expensive; they will probably start with Synology Backup.)_
        *How wonderful that there are ingenious alternatives that treat customers fairly*
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      6. I am looking to upgrade to more capacity than my 918+ with 4 WD 10 TB Red NAS drives. However, Synology new policy may cause me to look else where even though I have had No Issues with the Synology unit I have. What do you recommend? Thanks
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      7. Synology are simply purchasing 3rd party drives, relabelling them before selling them on again with an additional mark up. People like Seagate or Toshiba are not going to be giving their drives away. As you say Rob, if the hardware is the same I cant really understand why Synology can’t verify them. They are currently using said drives with their own label. Doesn’t add up!
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      8. Having recently purchased a new DS423+ (not choosing to lock myself even more by opting for a DS425+) I decided to go for SSD read/write caching. I diligently checked the SSD compatibility list for the DS423+ (surprisingly extensive BTW) and found a match on Amazon (I think most of the supported/tested SSD’s in their list are quite old now, so harder to get).

        Waited two weeks to get hold of the pair of SSD’s I needed, only to find that I received that message during installation about them not being verified. Fortunately, I was able to continue past the warning. However, what’s going on? Why did I receive that warning for a hard to find SSD that was on the compatibility list?

        Are Synology slowly reducing their compatibility list on existing models?
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      9. Considering the criticism from the channel regarding this whole locked drive situation, fair play to Synology for giving you access to these for this video.
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      10. I really think there is an easy fix that Synology could implement.
        I am a IT professional. and my 1522+ is storing all my music and movies…. and is a backup location for my various home devices. But there is no way I paying 1 grand per 18TB drive.
        What synology SHOULD do… is for enterprise users with a SERVICE contract… they can require their drives all they want.
        But I am using UltraStore dives and they have never given me an issue and I should not be restricted… if a drive fails… that is why I have the synology… so I can swap it out.
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      11. No more Synology for me I’m afraid, moved over to unRaid using unRaid array, cache pools and a zfs pool and extremely happy… Sorry Synology your silly decision has lost you one customer and I’m sure there are many, many more out there….
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      12. My RS2423+ was one of the enterprise class NAS’s that they did the vendor lock on. At the time I purchased it they didn’t even offer a drive the size I wanted, so I had to use a workaround to get the system from reporting “degraded” and not run the monthly scrubbing. I’m looking at adding more drives to that unit this year, and while they now have a 20TB SAS option, I can’t justify the 40% markup.

        For those of us with those vendor locked 2023 models, they still don’t support non-Synology drives, and I’m not holding my breath that the 2025 Plus series will get 3rd party support. Honestly, the current machine will be the last Synology I have unless they reverse course on the 3rd party lockout or get their performance and prices on their drives more on par with the competition.
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      13. Apart from if they were crap , suppose, does it matter if they are good performers if you are forced to use them? And even if they were good could you depend on that in the future. If they are good and at a compatible price they’d sell without being forced to buy them. deal breaker for me and should be for you.
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      14. The simply solution to all this is buy a nas off someone else its clear synology are just ripping off customers by marking up their approved drives did anyone expect anything else
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      15. The situation with Synology drives has been sick from day one. A while back I was considering an upgrade to a xs+ unit but found that Synology had changed their tune and started forcing their authorized resellers to ONLY sell units with Synology drives pre-populated in the drive slots. And not just one or two either! They were forcing people to fill the unit instead. To make matters worse, their array of large size drives is sparse and seems purposely setup to force users to fill up NAS units more quickly and potentially push additional sales. I ended up purchasing a used xs+ unit where the seller couldn’t sell the original Synology drives due to security concerns.
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      16. Well, Seagate drives had (according to Backblaze) far higher failure rate than WD drives, therefore I would go for them. But If I cannot use them in Synology I am thinking of replacing my old one with some other NAS brand… I would even pay for some extended support for other drives manufacturer (lets make it like some licence/upgrade like cameras…) eg. 10 dollars per drive or something like that… but I dont want to be limited to some specific drives….
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      17. I’d be interested to see Synology’s third quarter sales figures for DS units. I wonder how low the line will go before they rethink their foolish policy.
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      18. I spent the night trying to decide how best to increase my storage capacity on a DS1621+ that is already populated with 16TB drives. I couldn’t find a way to do it short of buying an 5 bay expansion unit which, by the way, cost as much as a 2nd 6 bay NAS. I’m looking at other brands now.
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      19. I’ve gone to Ugreen Dxp4800plus. I used to have a DS220+ and was, am a novice with NAS abilities and use it just for Plex, photo storage etc. I’m very happy with moving and this was mainly because of the drive lock in fiasco.
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      20. Again poignant and to the point – ty
        Synology has certainly shot it’self in the foot with this ‘lock-in’ and not being proactive with a positive list of 3rd party hdds. before going to market.

        If Synology didn’t have the best OS we’d have moved elsewhere already, but now in a ‘holding pattern’ awaiting Seagate / WD whitelisting
        Just my 2p
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      21. In Canada, these are the current prices for 20TB drives:

        Synology HAT5310 – $1034.99
        Western Digital Red Pro – $584.99
        Western Digital Gold – $599.99
        Seagate Ironwolf Pro – $579.99
        Seagate Exos – $549.99

        Prices can be even lower during sales such as Prime Day or Black Friday or even as prices fluctuate over time. Also even the 26TB WD Red Pro ($789.99) is cheaper than the Synology 20TB.
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      22. Let’s give Synology the benefit of the doubt and say they are moving in this direction (of drive lock-in) to reduce the variability in devices so they can better support end-users. If that was one of their goals (instead of a blatant cash-grab), then why oh why did they make it mandatory? Why take away something from loyal customers that has been present since the founding of your company? DSM is nice but is it worth hundreds or thousands in up-charges for re-labeled drives?

        Roll out classes of devices: Beginner/entry-level=NAS with Synology-branded drives plus free tech support, mid-level/pro-sumer=NAS with optional branded drives and charged support, IT pro/tech geek=Synology enclosure + bring your own drives, you’re on your own. Or, screw over your existing base while confusing potential new customers.
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      23. Thanks for the honest review. I would not mind paying a little more for a Synology branded hard drive or SSD for business purposes if that improves the support process, but these price differences are huge and for my friends, family and my own personal storage, freedom to use any brand of drive is simply a must-have.
        So Synology should stop thinking they are EMC or NetApp and reverse this self-destructive choice with a firmware update and a public apology. Only then will I ever buy or recommend a Synology system again. I have used Synology for decades and I was really looking forward to upgrading this year, but now I look at other brands.
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      24. By drive-locking, Synology is rewarding their most loyal supporters by keeping a good value on the older units. I can pay a bit more for their drives and upgrade to the 25 series… and still sell my ds1520+ at a great price. They’re playing 3D chess and it’s great for me!
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      25. I don’t understand why you’d give synology such leeway about their supported drives list, or anything else for that matter. The fact that they’re not allowing the very same models they’re white-labelling tells you everything you need to know about the reason behind the drive lock-in.
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      26. Why would I pay extra for vendor-locked hard drives that are just re-stickered Toshiba drives at 200% markup? I’ll just go with another NAS brand other than Synology that doesn’t do disk lock-in.
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      27. Buying synology drives will never be the best value because they are too low volume, both in manufacturing and shipping. Most home and prosumer users are keeping an eye on sites like ServerPartDeals for floods of things like 18tb brand new enterprise drives for sale for crazy low prices like $189 because some shipment got refused by a datacenter somewhere. These are not common prices, but it happens commonly enough that it’s a nobrainer to wait for them. Synology can’t have sales like this, because they don’t make or ship enough drives. They’ll never be able to sell them to us basically, so they have to force it.
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      28. I’m wondering if anyone remembers the old HDD silencers … lovely big radiators that one wapped their HDD inside to essentially keep the bloody things quiet!

        They literally don’t exist anymore! ????

        ( _I’m wanting to build an ‘in room’ DAS without moving to SSDs and HDD noise is my main concern_ )
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      29. I’m waiting to see someone burn the Synology firmware into a Seagate drive. Or, do what thestorageguy here on YT did and that was run the Github script to add other HDD’s onto your own Synology NAS’s approved list.
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      30. The value series is the only one that compared to other consumer grade drives. The enterprise series is very much in line with other enterprise grade hard drives (like the ones you get from NetApp or other storage system manufacturers)
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      31. Having to acquire a rare special type of hard disk has caused major problems for enterprise customers using Synology products. Even if you put price aside – Our problem in Australia is the geographic “tyranny of distance” with Synology having zero service centres covering regional areas, and neither of the (two) distributors carrying stock of Synology drives in capital cities. When a drive fails we have to wait for replacements to be shipped to Australia and they don’t even offer advance replacement service.

        The company I work for still have over 56 x Synology 12-Bay NAS in our business we need to replace in the second half of 2025 and at the moment we are handling drive failures by holding our own stock in Sydney & Melbourne and having to ship them overnight to our branch sites. WE DO NOT WANT TO BE A SYNOLOGY SERVICE CENTRE!!!! They should have got their act together and organised a maintenance provider such as Interactive maintenance solutions before embarking on this lunacy. It does not matter if they change policy now, the management here are so sick of the hassles and will never buy that brand again.
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      32. Here is my questions #1 do you have to return the drives to Synology or did they GIVE them to you #2 did Synology view this video prior to it going live on YouTube ? Honestly as you say …it really has no justification so my only thoughts were they are trying to Ugreen their way forward (Referring to Ugreen having been recently exposed at paying reviewers and demanding video approval)
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      33. Maybe something has changed, as it has been a long time since I’ve been in enterprise storage, but the markup was usually justified by a guaranteed availability of certified drives over a longer period of time than manufacturers and retailers provide to the general public. Mixing different drives isn’t as bad as it once was but it can still be a gamble.
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      34. Your statement or conclusion is so true, why on earth has Synology decided to go for vendor lock in and only supporting there own (rebranded) and more expensive storage media?! And why does this frustration come to a surprise so they are now working on expanding the compatibility list. so unnecessary and will turn away many (regular) customers who will now shop elsewhere for their NAS needs. This while the software (DSM) just works fine and is best in class. My 918+ still works fine with WD Red Pro disks, this choice is really not to be explained or justified other than commercial exploitation
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      35. Robbie if someone is buying larger hard drives – the NAS box is wrapper around the hard drives.
        Hard drives are much more expensive than the the NAS unit.
        Synology NAS DS923 – cost approx £137 / drive bay vs Seagate Ironwolf Pro 18 TB is £380
        Synology drive bay cost 26% (the wrapper) . . . Seagate 18 TB hard drive 74% ( storage media) . . . . price per drive bay
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      36. I’m still seeing a couple of ideas behind their plan…
        1) As with Broadcom/VMware – chase enterprise, after volume discounts buyer won’t care.
        2) as with (1) less customers but far higher profit margins, and it’s the small aka “expensive to support” customers that you shed or overcharge.
        3) They have a hope to charge WD/Seagate etc to validate their drive models, perhaps including a charge per drive. Though with the big margin on their own brand drives this seems less likely for now.
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      37. I got 2 small Synology NAS. I like them, but since Synology announced this BS, for me this company is dead.
        I will never again buy Synology.
        Bye bye Synology
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      38. Not buying any Seagate drive under any branding – especially not when it’s even more expensive
        Not buying into any new vendor lock-in situation either, after almost 40 years in Apple’s walled garden / iPadded cell
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      39. I have this vision of 3 witches at Synology chanting “Bundle, bundle, toil and trouble. Give them half and charge them double” (with apologies to Shakespeare)
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      40. Ditched Synology earlyer this year after +10 years and multiple generations of Synology NAS-ses because of (1) the increasing vendor lockin policy by Synology and (2) the lack of flexibility with regards to M.2 storage. Moved to Asustor and am quite happy with the platform, software, community support and flexibility overall.
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      41. 6:13 On that 12 Tb Seagate Ironwolf drive, to make the arithmetic a little more dramatic ( and the comparison a bit more correct IMHO ) the premium for the Synology drive is 80% above the Seagate drive. ( $450 – $250 ) / $250 = 80%
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      42. I’ve never heard you so critical about the new Synology drive lock-in policy, but I like it, since this is now much more in line with how most people here perceive it.
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      43. The Synology HAT5300 12TB cost more than either a 20TB Seagate IronWolf Pro or a 20TB WD Red Pro.
        Say it all really.
        Thank you Rob for the effort you put into this.
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      44. This video pushes me even further from Synology. Either they have a completely out of touch marketing dept. or Synology really wants to ease out of consumer class NAS systems. I think Synology will see that consumers no longer want their NAS models soon due to the lack of iGPUs for transcoding Plex, the outdated CPUs they use, and/or because of the Synology only HDD/SSD requirements. They would be best served, profitability wise, to license their OS to others down the road.

        As I said in the previous NASCompares video, I’ll keep my DS920+ until it dies and recently have added a NUC as my Plex server that transcodes my 4k library from my DS920+ storage easily and only use my DS920+ for storage and surveillance. I will be buying something other than Synology to eventually replace my DS920+.

        Maybe I’ll just use my Asus NUC 15 Pro+ with external storage via Thunderbolt. Like this: Acasis 40Gbps M.2 NVMe 4 Bay RAID SSD Enclosure. The Ultra 2XXH CPUs are light years more capable that the J4125 CPU in my DS920+.

        The NUC market is exploding now and it will be exciting to see where this goes. The NUC market in 2025 is $2.5B and is expected to grow by 15% each year through 2033. This might be understated since NUCs now can replace desktops and an external GPU can be added via a docking station.
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      45. Excellent work as always Robbie.

        I personally just can’t see this ending well for Synology. They’ve caused so much ill will towards the brand that even if they were to reverse course, the damage has already been done.
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      46. I’m gonna be honest, I own a DS1522+ Synology and it’s populated with 12 TB hard drives from Synology for a few years now, and not once have I seen or received a firmware update that is needed for their hard drives. It may happen more in data centers by certain applications that the company needs to be running in, but for home use, I feel it’s a terrible excuse to keep forcing people to buy their drives. If it offers no other benefits, then a normal Seagate or Western Digital drive, granted those drives will come with five-year warranties compared to the three you get, and the possible chance of getting a firmware update, and you don’t have to pull the drives out and update them. I haven’t had an update on a hard drive since 1999, a Maxtor 20 gig hard drive back in the day.
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      47. why would anyone rely on a single point failure for storing data? i mean you buy a NAS and then you have a need to replace a drive but they are out of stock for many months, sounds like the dumbest decision ever, not to mention if there Software and Raid only works “properly” on their “drives” then you have another single point of failure for not being able to recover Data.
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      48. Blacklist other harddrive isnt a good way to promote you have something better

        If their custom firmware works better ,people will buy those without badlisting thing
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      49. The price difference “justifications” from Synology:
        1. “We put a sticker with our logo on the drives and even wrote our name in the [otherwise unchanged] firmware!”
        2. “Stop thinking already and give us your money!!1!11!”
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      50. I can’t see Synology backing down on the locked drives for at least 6-12months and then what will it be a few selected or will they remove the restriction all together with just warnings saying its a non verified drive.
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      51. I still maintain that Synology are watching and waiting to see how user feedback and the PR fall out of this drive lock-in policy plays out. If I were in their marketing team right now, I’d be very worried about how the near-universal negative press they’re receiving will impact sales.

        Sinology won’t tell us what the verification requirements are. That tells me there is nothing special here, other than corporate BS. If third-party drives, the ones that have always been verified, do become usable, it will prove there was nothing wrong with them to begin with.

        What will be more interesting is to see how Synology walk this decision back if they get smart and choose to.
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      52. Bottom line here, it’s pure profit driving Sinology’s decision to lock users into their own rebranded drives. No matter what corporate-speak excuse they offer, it cannot be denied. Had Synology done the R & D, spent millions building their own drives, there might have been some justification. Instead, they’re basically slapping their own label onto Seagate and Toshiba drives and replacing the OEM firmware with their own. That firmware, based on performance stats, hasn’t been touched at all. The reason for the firmware, is to control the situation. Synology say you can update the firmware on their drives without a shutdown. Sure, you could do this on other drives, too. Synology simply don’t offer that facility. There’s nothing about their firmware that allows live updates, other than them making a determination to do it or not.

        At the prices for a 16Tb HDD from Synology as opposed to an Ironwolf, you could spend over £1,200 more by populating a 4 bay with their drives.

        That’s an awful lot more money for what amounts to nothing in terms of difference between thir drives and the OEM versions they’re based on.
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      53. No matter how hard you try …. you cannot pit a lipstick on a pig (ahem Synology drive). I’m sorry there’s no justification for a home user/prosumer to buy synology drives or any of the Synology 2025 NAS Boxes as long as the drive lock in is still there.
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      54. Synology started great as a company but they are now nothing more than greedy goblins. My suggestion, don’t buy the new synology nas or synology HDD’s. Sooner or later they will cave and stop being anti consumer.
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      55. You know, the price difference between the drives would actually pay for a NAS. I recently purchased a new DS423+ for my backups. It cost me less than the price difference between a 20Tb Seagate Exos and the Synology equivalent HDD.

        Even at lower capacity points,, multiple Synology HDD’s will add the cost of another NAS to the total cost.
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      56. It would be interesting to understand exactly what kind of firmware is in the SynoGate LogyWolf drives, other than branding.
        To be honest, I’m really just hoping that Synology will sell DSM as a license for people to run on their own systems.
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      57. Western digital is the best from our data. Funny that Synology doesn’t subcontract to them. At the end of the day it is a scheme. They have zero real data altogether to prove anything, this is simply forced revenue because they can’t compete very well.
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      58. I enjoy your videos.
        I wonder if there is a Synology NAS system that handle PGS subtitles (especially on 4K HDR videos) better than the DS918+ that I have now?
        I know that SRT subtitles work lots better, but they look ratty on screen and they almost never sync to the video correctly.
        Maybe you could do a comparison sometime?
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      59. Did you install Plex on the m.2 MVNe when you did the tests above? Would it have made much of a difference if it was installed just on the drives? If you did install it, what brand/size/model of M.2 MVNE did you use/would you recommend for a Plex isntall?
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      60. Why on earth are you not confirming via the ” (hw)” string next to the user playback details at the bottom (under the CPU) that its using the hardware encoder properly on each of these videos? CPU graph only shows some of the picture. Each time yous tart a video or change the transcoding settings on the video to force something else you need to check if the ” (hw)” string is present to confirm the hardware transcode is working with that particular combo.
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      61. Great video. Like many, I’m deciding between the 923+ and the 423+, upgrading from the 418play. What are some examples of clients that do not support HEVC? I run Plex on an iPad Pro, MBP and Apple TV. My need to transcode is mostly to convert 1080p to 480p while I’m traveling w/ remote connection; the 923+ should be able to handle this right? I don’t have many 4k files now, but this might be different 5 years from now. I use my NAS for back ups, photo management, and Plex… I think the 423+ is prob what would suite me best, I’m no power user…. but I just hate the idea of giving up CPU power and expandability. ugh decisions.
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      62. I’m new to NAS. I want to get a 423 or 923. From this video it seems the 423 will play mostly everything. What’s the advantage of spending the extra $100 for the 923? Like when will I make use of the better hardware? I plan to use it for Plex and backing up files from my computers. The only time Plex will be used outside the home is for videos that are 1080p or below (my kids cartoons)
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      63. Thanks so much for that review of Plex playback. I’ve been considering buying the Synology DS423+ for storage & an Emby server. This will be my first NAS & I have found all your videos & reviews a valuable resource for my research before buying. I really like your clear concise approach & your sense of humour. (I hate seagulls)
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      64. “I’m spectacularly arrogant” ????????????????

        I love the work you’re doing. Quick question, where can I find the Jellyfish test files that you use. I’d like to have those just to test my Plex setup.
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      65. Help! I’m looking for a NAS that will fit into my needs and usage. I want my 5TB of RAW photos available for Lightroom, back up 5 iPhones, 2 iPads, 3 MacBook Pro’s, and MAYBE put my 1200 DVDs and 100 Blu-rays on the NAS to play in home only on AppleTV and iPad and iPhones. That’s it. I don’t need tons of apps or internet access to my NAS, just local connection over Wifi. Connecting via Ethernet is not an option for me.

        I’ve been leaning toward a Synology because they seem more ubiquitous in the United States and they seem easier. However I’ve been sitting on the fence so long I’m starting to get dizzy. Which 4 bay make and model would you recommend for my situation? 423, 923, 920, QNAP, or other.

        Any help would be immensely appreciated! Thanks!
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      66. Great video as always. Would you still recommend the QNAP TS-464 over the Synology DS423+ ? They both seem to be similar in capabilities but the DS423+ is $150-200 cheaper in the US.
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